My research deals with the perception of the structure and motion of visual stimuli. To this end, I conduct psychophysical studies of the ability of human observers to detect and discriminate computer-generated spatial patterns defined by various stimulus attributes (e.g., color, texture, depth, flicker), and of their ability to encode the direction and speed of the same patterns when they move. As the stimuli have become more complex and lifelike over the years, my research interfaces more and more with other areas of inquiry in cognitive science (e.g., segmentation of visual scenes, object constancy, attention). I use the results from the psychophysical experiments to construct models of visual processes that contain physiologically plausible pathways and stages. The modeling enterprise makes my research an integral part of the discipline of neuroscience.